kit vs mess kit

kit and mess kit both are nouns.

Word	Noun	Adjective	Verb	Adverb
kit	Yes	No	Yes	No
mess kit	Yes	No	No	No

As nouns, mess kit is a hyponym of kit; that is, mess kit is a word with a more specific, narrower meaning than kit:

kit: gear consisting of a set of articles or tools for a specified purpose
mess kit: kit containing a metal dish and eating utensils; used by soldiers and campers

Other hyponyms of kit include carpenter's kit, tool kit, first-aid kit, layette, sewing kit.

kit (noun)	mess kit (noun)
young of any of various fur-bearing animals	kit containing a metal dish and eating utensils; used by soldiers and campers
gear consisting of a set of articles or tools for a specified purpose
a case for containing a set of articles

kit (verb)	mess kit (verb)
supply with a set of articles or tools